如图,已知抛物线经过点
,
,
,
是抛物线对称轴上的一点,且点
在第一象限.
(1)求抛物线的函数解析式.
(2)当
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02033bcaf7a59f4fa1969a740c87718d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f5353818d0e41d51657a7d9655021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ff766fc0895c2a015291b6eca3cf00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/15/3724a625-ebfb-410c-9c56-0c17a916749e.png?resizew=143)
(1)求抛物线的函数解析式.
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e402ad4d7205f8f2529040cf3aeed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
更新时间:2023-09-28 08:44:16
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解答题-问答题
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【推荐1】如图,已知一次函数
与反比例函数
的图像在第一、三象限分别交于
,
两点,连接
.
(1)求一次函数和反比例函数的解析式;
(2)求
的面积;
(3)直接写出
时x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed06ccefffc165f9c77250cd28301d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc4622a5f65ffbece28e09206b0cb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec6a0a7c18e9ab697fc32a84e142f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfe3e8ebabdd5600b7350a06e79bb88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3f2478ce7f6af723700f3def60d794.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/31/7f270d90-b0ab-4e7d-846d-d219002fd40e.png?resizew=226)
(1)求一次函数和反比例函数的解析式;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df86b0da538701c08fb214608e062372.png)
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【推荐2】如图1,在边长为
的正方形
中,
为
中点,动点
以每秒
个单位的速度,从点
出发,在射线
上运动,同时动点
以每秒
个单位的速度,从点
出发,按
的方向运动至点
停止,当动点
停止运动时动点
也停止运动.连接
,设点
的运动时间为
秒,
的面积为
,
的面积为
.
(1)求出
,
关于
的函数解析式并写出自变量
的取值范围;
(2)在图2所示的平面直角坐标系中画出
,
的函数图像,并根据图像写出函数
的一条性质;
(3)当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ccfc06739ab01294379f26e1c8124a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b5401163fd1db5a7ebc3dc03575fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e668a1d0d7252f4b52c3f34ddf402a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/18/d405f7ae-529e-4be5-9799-b647d5ca8b80.png?resizew=460)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)在图2所示的平面直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292c47f62023b747f1a4bd615c75284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解答题-作图题
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【推荐1】小明按照列表、描点、连线的过程画二次函数的图象,下表与下图是他所完成的部分表格与图象,求该二次函数的解析式,并补全表格与图象.
![](https://img.xkw.com/dksih/QBM/2018/1/11/1857865614565376/1866006561947648/STEM/aca7cf02d52a4f64865fec6eb0b65bbc.png?resizew=569)
![](https://img.xkw.com/dksih/QBM/2018/1/11/1857865614565376/1866006561947648/STEM/aca7cf02d52a4f64865fec6eb0b65bbc.png?resizew=569)
![](https://img.xkw.com/dksih/QBM/2018/1/11/1857865614565376/1866006561947648/STEM/072f2d136a464f769705d02a0cc1d32b.png?resizew=288)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,在平面直角坐标系
中,一次函数
的图象过点
,且与x轴交于点B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/7079861f-ef9a-4aaf-909c-34cbe1d70c3f.png?resizew=118)
(1)求m的值和点B的坐标;
(2)若二次函数
图象过A,B两点,请在图中画出 这个二次函数的草图,并直接写出 关于x的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b74381f68eb1e33d412a7a3d62313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca979687ffb2214e747525635a6912c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/19/7079861f-ef9a-4aaf-909c-34cbe1d70c3f.png?resizew=118)
(1)求m的值和点B的坐标;
(2)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53be61cd85ec86aabd164cae0265246b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bce4a9a3dbb1b5b1cb8c00b9973913a.png)
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【推荐1】已知抛物线
经过点
.
(1)求抛物线的解析式;
(2)若点
均在该抛物线上,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53be61cd85ec86aabd164cae0265246b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c099382140d9f89736e948471ec6a5.png)
(1)求抛物线的解析式;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167a6083d9ff22543545bbb3387bef23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb5a497aea347432d25c58e1eeacd8fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3625894aa1bea3218ea0b8c561a18e.png)
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【推荐2】二次函数
的图象如图所示,根据图象回答下列问题:
(2)方程
的两个根为______;
(3)当
时,自变量x的取值范围为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc90b02a4cd1425aabfc192b1cdee17.png)
(2)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
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